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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "main/context.h"
#include "brw_context.h"
/**
* Query information about GPU resets observed by this context
*
* Called via \c dd_function_table::GetGraphicsResetStatus.
*/
GLenum
brw_get_graphics_reset_status(struct gl_context *ctx)
{
struct brw_context *brw = brw_context(ctx);
int err;
uint32_t reset_count;
uint32_t active;
uint32_t pending;
/* If hardware contexts are not being used (or
* DRM_IOCTL_I915_GET_RESET_STATS is not supported), this function should
* not be accessible.
*/
assert(brw->hw_ctx != NULL);
/* A reset status other than NO_ERROR was returned last time. I915 returns
* nonzero active/pending only if reset has been encountered and completed.
* Return NO_ERROR from now on.
*/
if (brw->reset_count != 0)
return GL_NO_ERROR;
err = drm_intel_get_reset_stats(brw->hw_ctx, &reset_count, &active,
&pending);
if (err)
return GL_NO_ERROR;
/* A reset was observed while a batch from this context was executing.
* Assume that this context was at fault.
*/
if (active != 0) {
brw->reset_count = reset_count;
return GL_GUILTY_CONTEXT_RESET_ARB;
}
/* A reset was observed while a batch from this context was in progress,
* but the batch was not executing. In this case, assume that the context
* was not at fault.
*/
if (pending != 0) {
brw->reset_count = reset_count;
return GL_INNOCENT_CONTEXT_RESET_ARB;
}
return GL_NO_ERROR;
}
void
brw_check_for_reset(struct brw_context *brw)
{
uint32_t reset_count;
uint32_t active;
uint32_t pending;
int err;
err = drm_intel_get_reset_stats(brw->hw_ctx, &reset_count, &active,
&pending);
if (err)
return;
if (active > 0 || pending > 0)
_mesa_set_context_lost_dispatch(&brw->ctx);
}
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